/*
 * Copyright 2007 Rob Nielsen
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 * 	http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package com.googlecode.proxymatic.core.handlers.method;

import com.googlecode.proxymatic.core.BuildtimeContext;
import com.googlecode.proxymatic.core.MethodHandler;
import com.googlecode.proxymatic.core.MethodInvoker;
import com.googlecode.proxymatic.core.ProxyBuilder;
import com.googlecode.proxymatic.core.RuntimeContext;
import com.googlecode.proxymatic.core.util.PrimitiveUtil;

import java.lang.reflect.Array;
import java.lang.reflect.Method;

public class DoNothingMethodHandler implements MethodHandler, MethodInvoker {

    public MethodInvoker getInvoker(Method method, BuildtimeContext context, ProxyBuilder proxyBuilder) {
        return this;
    }

    public Object invoke(Method method, Object[] parameters, RuntimeContext context) throws Throwable {
        Class returnType = method.getReturnType();
        if (returnType.isArray()) {
            return Array.newInstance(returnType.getComponentType(), 0);
        }
        if (returnType.isPrimitive()) {
            return PrimitiveUtil.getDefaultInstance(returnType);
        }
        return null;
    }

    public Class[] getExceptionTypes() {
        return NO_DECLARED_EXCEPTIONS;
    }
}
